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Tracking Hot Spots

Monitoring infrared sources with the Mega88

Tracking Hot Spots
In this instalment, we add a miniature infrared camera with integrated image processing capability to the ATM18 system. This makes it possible to identify the positions of up to four infrared sources, display the positions on a monitor, and output their coordinates. Assembling a high-tech camera system of this sort is certainly affordable if you take advantage of mass-produced high-tech toys.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

R1,R2 = 2kohm2
R3 = 22kohm
C1,C2 = 10µF 25V
C3 = 100nF
D1, D2 = 1N4148
CG1 = 25MHz oscillator module
IR1 = Wii Infrared image sensor (see text)
K1, K2 = 2-way SIL header
PCB, order code 080358-1

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